JPS63234094A - Liquid cleanser composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a liquid cleanser composition that has excellent cleaning and polishing power and does not damage surfaces to be cleaned.

[Conventional technology and problems]

Cleansers target stains such as denatured or burnt oil stains, water stains and slimy stains on sinks, and soap scum stains on bathtubs.

In addition, the material of the target surface is often a metal surface such as stainless steel, or a material that is easily scratched, such as glass fiber reinforced plastic (FRP) used in bathtubs. Conventional cleansers cannot be expected to have sufficient cleaning power against these various stains and to provide a glossy finish without damaging the surface to be cleaned.

If the particle size of conventionally used silica stone, calcium carbonate, and zeolite is made smaller, objects will be less likely to be scratched, but the cleaning power is not fully satisfactory.

[Means for solving problems]

The inventors of the present invention have conducted intensive studies to create a cleanser that has sufficient cleaning power and provides a smooth finish for a wide range of commonly found stains such as those mentioned above. They found that this is effective and have completed the present invention.

That is, the present invention provides an aggregate in which abrasive particles containing 70% by weight or more of primary particles with a particle size of 1 to 15 μm are aggregated with an inorganic binder, the average particle size of which is 3 to 50 μm, and 15% by weight or more. Provided is a liquid cleanser composition comprising a surfactant and abrasive particle aggregates that collapse to an average particle size of 1 to 15 microns when a load of 100 g/cm'' is applied.

It is thought that the polishing power and the scratchiness of the surface to be cleaned are influenced by the hardness and particle size of the polishing agent. Therefore, the present inventors investigated silicon dioxide, which is a hard abrasive (formerly Mohs' hardness: 7), and calcium carbonate, which is a relatively soft abrasive (formerly, Mohs' hardness: 3), with an average particle size of 1 to 100 μm. Silicon dioxide, which is a hard abrasive, improves the scratch resistance by reducing the average particle size, but the abrasive power decreases, making it impossible to obtain a satisfactory result.Also, calcium carbonate increases the particle size (as the particle size increases, It was discovered that the higher the polishing power, the more scratchy the material is, making it impossible to obtain a satisfactory product.

In this way, it is difficult to obtain higher polishing power with lower scratch resistance simply by adjusting the hardness and secondary particle size of the polishing agent.

As a result of extensive studies, the present inventors found that the abrasive with a small secondary particle size (0) forms secondary particles that are aggregated to the extent that they collapse under the load of normal abrasive action, resulting in less scratching. They discovered that higher polishing power could be obtained.

Comparing the hardness of dirt and the hardness of the surface to be cleaned to which the dirt is attached, in most cases found in homes, the surface to be cleaned is harder than the dirt.

for example, in the gas range Stainless steel material〉 Burnt stains in the sink Stainless steel material〉Water stains in the toilet bowl Sanitary ware〉Iron rust and calcium phosphate in the bathroom FRP>Soap scum stains etc.

In the liquid cleansing composition of the present invention, the aggregates with large particle diameters first act on the dirt, efficiently polishing the dirt, and the aggregates disintegrate on the surface to be cleaned, which is harder than the dirt from which the dirt was removed, and the small particles It is thought that the abrasive acts and reduces the scratch resistance.

The abrasive used in the present invention includes silicon dioxide,
Aluminum oxide, aluminum hydroxide, synthetic zeolite, natural zeolite, magnesium oxide, titanium oxide,
Examples include silicon carbide, calcium carbonate, calcium phosphate, chromium oxide or corundum, emery, silica, quartz sand, calcite, and dolomite.

The secondary particles may be prepared using an inorganic binder such as calcium sulfate, barium sulfate, barium citrate, barium hydroxide, etc., and are 15 to 100 g/Cff1"
Any method may be used as long as it can be made to collapse when a load is applied. For example, the following preparation methods may be mentioned.

Preparation example 1) Average particle size 12μ containing 80% by weight of primary particles of 1 to 15μ
Disperse 30 parts of silicon dioxide in 70 parts of water, add 0.8 parts of sulfuric acid with stirring, and then gradually add 1.5 parts of barium hydroxide. After separating the solid content by centrifugation, dry it.
Agglomerates with an average particle size of 27μ are obtained.

In the composition of the present invention, the blending amount of the polishing side particle aggregate is preferably 10 to 70% by weight.

As the surfactant used in the present invention, anionic surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants are used, but particularly preferred are anionic surfactants. surfactants and nonionic surfactants.

As the anionic surfactant used in the present invention, ordinary sulfonate-based anionic surfactants, sulfate-based anionic surfactants-phosphate surfactants are used. Sulfonate-based anionic surfactants include straight or branched alkyl (C
8-C22) Benzene sulfonate, long chain alkyl (C
8-C22) sulfonate, long chain olefin (Cm-C
2.) There are sulfonates, etc. In addition, as sulfate-based anionic surfactants, long-chain monoalkyl (C6-C
22) Sulfate ester salt, polyoxyethylene (1 to 6 mol) long chain alkyl (C6 to C22) ether sulfate ester salt, polyoxyethylene (1 to 6 mol) alkyl (C
8-C+a) Phenyl ether sulfate salts, etc. In addition, as phosphate-based anionic surfactants,
Long chain monoalkyl, dialkyl or sesqui (each alkyl group has 8 to 22 carbon atoms) phosphate, polyoxyethylene (1 to 6 mol) monoalkyl, dialkyl or sesqui (each alkyl group has 8 carbon atoms) -22) phosphates, aliphatic carboxylates having 8 to 22 carbon atoms, and the like. Cations serving as counter ions for these anionic surfactants include alkali metal ions such as sodium and potassium ions, almanolamine ions such as monoethanolamine, jetanolamine, and triethanolamine. As the anionic surfactant of the present invention, sulfonate surfactants are preferred because of their strong resistance to hydrolysis.

Furthermore, linear or branched chain alkylbenzene sulfonates are preferred from the viewpoint of detergency and the like.

As a nonionic surfactant, polyoxyethylene (
1 to 20 mol) long chain alkyl (primary or secondary C8
~C22) ether, polyoxyethylene (1 to 20 mol) alkyl (C8 to Cps) phenyl ether, oxyalkylene adduct compounds such as polyoxyethylene polyoxypropylene block copolymer, higher fatty acid alkanolamide or its alkylene oxide adduct, etc. used.

The blending amount of the surfactant is preferably 1 to 20% by weight.

In the present invention, a di- or tricarboxylic acid having 3 to 8 carbon atoms or a salt thereof can be added as a dispersion stabilizer when preparing a liquid cleanser. Specific examples of di- or tricarboxylic acids having 3 to 8 carbon atoms or salts thereof include:
Malonic acid, malic acid, tartaric acid, citric acid, L-aspartic acid or a salt thereof.

The amount of di- and tricarboxylic acid or its salt is 0.1-5
%, more preferably 0.5 to 3%.

Furthermore, sodium silicate, such as sodium silicate No. 1, sodium silicate No. 2
If alkaline earth metal salts such as No. 3, sodium silicate No. 3, sodium silicate No. 4, sodium orthosilicate, sodium sesquisilicate, sodium metasilicate, magnesium sulfate, and calcium chloride are used together, the dispersion stability will be further improved.

Furthermore, if necessary, alkaline agents, solvents, hydrotropic agents, bactericidal agents, fragrances, pigments, dyes, etc. can be optionally added.

Examples of alkali agents include organic alkali agents such as ammonia, monoethanolamine, jetanolamine, triethanolamine, and morpholine, alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, sodium carbonate, sodium pyrophosphate, and tripolyphosphoric acid. sodium,
Sodium borate etc. or their potassium salts etc. can be used.

Examples of solvents include aliphatic alcohols such as ethyl alcohol and butyl alcohol, ethylene glycol, propylene gelicol, polyethylene glycol, polypropylene glycol, or their lower aliphatic alcohols (such as methyl, ethyl, propyl, butyl). - Examples include ether.

Paratoluene is a hydrotrope.

Sulfonates, xylene sulfonates, cumene sulfonates, urea, etc. can be used.

The pH of the liquid is adjusted from neutral to alkaline so as to exhibit excellent cleaning power.

〔Effect of the invention〕

The cleanser composition of the present invention has excellent cleaning and polishing power against a wide variety of stains, from denatured oil and burnt stains to soap scum in bathtubs, without damaging the surface to be cleaned. It does not damage the surface being cleaned and gives a glossy finish.

〔Example〕

Examples will be described below, but the present invention is not limited to these examples.

Examples 1 to 5, Comparative Examples 1 to 9 The compositions shown in Table 1 were prepared, and the cleaning power, scratch resistance, and average particle size of the abrasive after the cleaning power test of each composition were evaluated as follows. .

<Test method> 1. Ability to clean oil-denatured stains and scratches on stainless steel surfaces A 5XIQcm stainless steel test piece was coated with 0 or 1 g of rapeseed oil/carbon black (weight ratio 5/l) at 150°C. Denature for 90 minutes.

The evaluation method was to take 2 g of a sample and measure the number of times it was washed using a urethane sponge under a load of 2 kg/30 cm2 until the stain was completely removed.

The state of the stainless steel surface at that time was evaluated with the naked eye. In addition, the average particle size of the abrasive in the sample after cleaning was measured.

The average particle size before and after washing was measured using a Coulter Counter (manufactured by Coulter Electrox).

Relative cleaning power Required number of cleanings 10 to 19 ・・・-5 20 to 39 ・・・・・・ 4 40 to 59 ・・・・・・ 3 60 to 79 ・・・・・・ 2 80 or more ・・・・・・・・・1 Scratch: No scratches 5 Fine scratches partially -・・・・・4 Fine scratches all over the surface −3 Large scratches ・・・2 Scratches on the whole surface and loss of luster ... 12. Ability to clean stains attached to bathtub and damage to stainless steel surface An FRP bathtub that had been used continuously for one week at home without being washed was used.

For evaluation, collect 2g of sample and use urethane sponge.
Under a load of 1 kg/30 cm'', the number of times of washing until stains in an area of 5 XIQ cm were completely removed was measured.

The state of the FRP surface at that time was evaluated with the naked eye. Also,
The average particle size of the abrasive in the sample after cleaning was measured.

The average particle size before and after washing was measured in the same manner as described above.

Relative cleaning power Required number of washes 2-3-...5 4～7・・・・・・・・・4 8-11 ・・・・・・・ 3 12-15 ・・・・・・ 2 16 or more・・・・・・・・・1 Vulnerability

Claims (1)

[Claims] An aggregate formed by agglomerating abrasive particles containing 70% by weight or more of primary particles having a particle size of 1 to 15 μm with an inorganic binder,
The average particle size is 3 to 50μ and 15 to 100g/
A liquid cleanser composition comprising an abrasive particle aggregate whose average particle size collapses to 1 to 15 μm when a load of cm^2 is applied, and a surfactant.